Annual report pursuant to Section 13 and 15(d)

Related-Party Transactions - Summary of Management Fees, Incentive Fees and Associated Credits and Administration Fees (Detail)

v3.20.4
Related-Party Transactions - Summary of Management Fees, Incentive Fees and Associated Credits and Administration Fees (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Related Party Transactions [Abstract]    
Base management fee $ 4,289 $ 3,623
Incentive fee 3,038 847
Capital gains fee 0 0
Credits from non-contractual, unconditional, and irrevocable waiver granted by Adviser's board of directors 0 (1,543)
Total fees to our Adviser, net 7,327 2,927
Administration fee 1,448 1,207
Selling Commissions and Dealer-Manager Fees 4,711 7,645
Financing fees 262 235
Total fees to Gladstone Securities $ 4,973 $ 7,880